Massage instrument.



H. DBBUW. MASSAGE INSTRUMENT.

AEPLIOATION FILED DEO.12, 1911.

Patented Oct. 21, 1913.

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'serves as a conduit for pressure fromthe inner tubel HEINRICH DREw, or BERLIN, GERMANY.

MASSAGE INSTRUMENT.

specification of Letters raient.

retreated oet'ai, reis.

.application filed December 12, 1911. Serial No. 665,333.

To all whom z'zmay conce/rn.'

Be it known that I, IIEiNRioH DREUW, physician, a subject of the German Emperor, residing at Berlin, Germany, have invented a certain new and useful Improvement in Massage Instruments, of which the following is a specification.

This invention consists in a modification of the hydraulic massage instrument tor cavitiesfof the body, which is .described in the. specification of German `Patent No. 289,100 and has for its distinctive feature a pair of concentric tubes, of which the outer one is provided with perforatious, while the space between the' inner and 'outer tube water and the discharge takes place through branch tubes. connectingthe Wall of the .outer tube with that ofl the inner tube. l l

The novelty of the present invention chiefly consists lin th-e fact, that for producing the vibrations, only one discharge/opening is provided and thereby the construe.

tion of the apparatus is considerably siinpli-` through said perforations, and alternately lied.

instrument embodying my invention, the mouth piece being shown in section, Fig. lil is an end view of the mouth piece, Fig. 2 is a section of the mouth a side view of an piece on a larger scale, Iiiggl isa section4 along linerb-B `of Fig. A

The instrument comprises an outer tube a, which contains an inner tubef, said tube n. terininatingin :in-annular head c having4 in its face numerousperforations d.' The head c constitutes the mouth-piece of ,the in'- str'ument, and isA covered with anindia-riib ber cap stretched over its tace. The opposite end of the tube Z) hasa bend which forms a joint` for 'a water supply pipe (not shown), while the free end f of the tube a 'forms aioint with a discharge pipe.

If pressure nwater is suppliedto the tube b" sure water in tube b drops and' ceases to act said In the accompanying drawing'sjligure 1 is l dieten-d and collapse said diaphragm,

on the diaphragm, in consequence of which the latter returns to its original position,` At that moment the diaphragm again @tiers a resistance to the discharge of Water, and the same cycle of operations is repeated. Thus, although the' tube is continuously supplied with pressure water, 'theconstant or continuous current produces a constant vibration .of the diaphragm. This motion may beutilized for massage purposes and 'for other purposes vwhere'a-short but rapid vibration is requiredV i y l. A continuous-current hydraulicl mas- I sageinstruinent comprising an outer discharge tube having a hollow annularhead whose outer face is provided with a series of perforations; an inner supply tube arranged within the outer tube in spaced relation to the wall thereoi2 and opening into y head; and a flexible stretched against the outer face of said head to normally cover said perforations, whereby `the stream oft Water entering said head from said supply tube will pass outwardly distend and collapse said diaphragm, and

`then pass into and through said dischargeA tube', and. -will phragm r during such passage.

i '2. A continuous-current hydraulic mascontinuously vibrate said diasage instrument coinprisinga hollow annular mouth-piece having a series of perforations formed in its outer face; a supply tube opening into the interior of the mouth-piece ;v 'au a discharge tube in communication with the-f g; central open space in said mouth-piece; andw a flexible diaphragm stretched over said face in position to normally cover said pei'.-

'torations and said open space, whereby vthe 95 stream of water entering said ,head froml said supply `tube will pass outwardly' through'said perforations, and alternately and tube, andwill continuously' vibrate said dia phra'gm'during such passage. f In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. f

-HEINRIGH DREUW.'

l/Vitnessesz` WOLDEMAR HAUPT,

HENRY HASPER'.

diaphragm -v then .pass into and through said discharge 10( 

